CUSTOMS ASSESSMENT & LANDED COST

Duty Tax

Also called
Customs duty, depending on context
Reading time
3 minutes

Customs duty is a government charge applied to goods under a jurisdiction’s tariff and customs rules. Depending on the rule, it may be based on value, quantity or another specified measure.

DUTY TAX IN PRACTICE

  1. Identify the goodsReview classification, origin and transaction facts.
  2. Verify current treatmentUse authoritative rules for the entry.
  3. Reconcile the assessmentKeep declarations and supporting records.

Use the agreed units, actual records and approved procedures for your operation.

A WORKED EXAMPLE

An arithmetic example is not a tariff determination.

Under a purely hypothetical 5% ad valorem rule applied to an accepted value of 1,000 currency units, the calculation is 50. Actual treatment requires the applicable classification, valuation and other rules; the example cannot establish a real shipment’s duty.

WHAT THIS MEANS FOR YOUR QUOTE

Agree the requirement before comparing quotes

Use the actual shipment, stock and service requirements. Record the billing unit, included work and responsibility for exceptions.

A LITTLE MORE CONTEXT

Questions about Duty Tax

Is duty the entire landed cost?

No. Transport, taxes, fees and other charges can also apply.

Does a product code alone settle the amount?

No. Other transaction facts and rules matter.

Can old rates be assumed current?

No. Verify the treatment applicable to the entry.

Source & example notes

US CBP: classification and valuation responsibilities.

Sources provide background on the linked topic. Product documentation describes a particular implementation; confirm the rules, contract and procedures that apply to your operation.

Quantities, costs and scenarios are illustrative, not operating targets, approved handling instructions or guarantees. Source guidance reviewed 22 October 2026.

Last updated: · 3PL Hub

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